Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 6:36  ☀️ Transit: 13:02  🌅 Sunset: 19:29


HR2172 is a giant star in the constellation of Auriga.

HR2172 visual magnitude is 6.3. Because of its reltive faintness, HR2172 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about HR2172:

HR2172 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 59°.

Celestial coordinates and finder chart of HR2172

HR2172 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR2172 are provided in the following table:

06h 11m 45s
+52° 38’ 49”

The simplified sky map below shows the position of HR2172 in the sky:

Finder chart HR2172 star
Simplified finder chart for HR2172.

Visibility of HR2172 from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR2172 is circumpolar and transits at 17:32 UTC (altitude: 88.8°)

Digitized Sky Survey image of HR2172

The image below is a photograph of HR2172 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of HR2172 is 0.011 arcsec per year in Right Ascension and -0.07 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR2172 star
DSS2 image of HR2172. The red arrow shows the motion of HR2172 during the next 10000 years (1.83 arcmin in Right Ascension and -11.67 arcmin in declination);

Distance of HR2172 from the Sun and relative movement

HR2172 is distant 326.98 light years from the Sun and it is moving far from the Sun at the speed of 11 kilometers per second.

100.30 pc
326.98 ly
11 km/s
0.011 arcsec/year
-0.07 arcsec/year

Spectral properties of HR2172

HR2172 belongs to spectral class A5 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR2172 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR2172. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2172